Key Responsibilities

Own firmware for optical transceiver reference designs built around TFLN modulators
Design, develop, and maintain embedded firmware for both IMDD and Coherent optical transceivers
Implement and optimize CMIS-compliant firmware stacks
Develop drivers and communication stacks for I2C and I3C interfaces
Interface with DSPs for signal processing, control, tuning, and monitoring
Support high-speed optical modules 1.6Tbps
Bring up hardware and debug issues
Collaborate closely with hardware, optical, and system teams
Develop internal tools (CLI/GUI) for diagnostics and configuration
Ensure firmware reliability, performance, and standards compliance
Contribute to system architecture and next-gen platform development

Required Qualifications

Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, or a related field, with 5-12 years of relevant industry experience
Strong experience in embedded firmware development (C/C++ and others)
Hands-on experience with CMIS and I2C/I3C protocols
Experience with QSFP, OSFP, or similar form factors MSA specifications
Experience working with DSP-based systems
Solid understanding of high-speed communication systems ( 400Gbps)
Strong debugging skills in lab environments

Preferred Qualifications

Experience with TFLN, silicon photonics, or other advanced modulator technologies
Background in coherent detection or PAM4 systems
Experience building reference designs
Experience developing GUI tools (Python, etc.)
Familiarity with MDIO, SPI, or similar interfaces
Experience with manufacturing test or automation

Key Skills

Embedded systems & low-level programming
High-speed interface protocols (I2C/I3C, CMIS)
Optical transceiver experiences (QSFP/OSFP)
DSP integration
Debugging & system bring-up
Tooling / GUI development

What Success Looks Like

Early hardware becomes stable, reliable, and production-ready
Firmware becomes a reference platform others build on
Complex cross-domain problems (firmware + hardware + optics) are solved quickly
System performance is pushed beyond conventional solutions

HyperLight is an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.

Senior Firmware R&D Engineer